About a month ago I had the opportunity to help build a hot tube in the middle of nowhere for a stag. I thought it would be fun to go over how to do this in case you ever are trapped in the woods and need to build a hot tub to stay warm for survival.
1. Using your trusty 4×4’s haul up a generator, boiler, stand for boiler, pump, tarps and anything else you need (I suggest food and water)
2. Dig a hole for the hot tube. Note: This is a lot of work when the ground is frozen.
3. Give up on digging the whole thing and use some logs to build some walls for the hot tub. This make the tub partially below ground and partly above ground. Easy to hop into, but still hard to fall into if there is alcohol involved.
4. Light the fire for the boiler to heat the water. This fire has to be large and very hot!!! BOONER helpfull tip: If the wood is very wet gasoline alone will not be enough to get a fire going. Here a tiger torch makes the process much easier and quicker.
5. While the fire is getting hot find a water source. In this case we have an ice cold stream we damed up and put a pump in. Before turning the pump on let some water go through the dam to allow the water to clear up from the dam construction.
6. Prepare the hot tub for filling by putting a tarp inside. This will water seal it. You can not have too big of a tarp, but too small is a disaster.
7. Put the boiler on the fire and attach the pipes that feed the boiler and that go to the hot tub.
8. Turn the pump on and wait for the hot tub to fill. This can take a while so this is a good point to make some food. Once the hot tub is complete move the pump from the water source into the hot tub to recirculate the water and keep it warm.
And that is all there is to making a hot tub to survive in the woods.